Hi all. What's the correct way to define things (mainly the symbol) when, defining a dual or quad opamp? Here are the problems I bounced against: 1) The quad or dual evidently has common power lines. 2) The model defines the pins in order +, -, V+, V-, and output (which seems quite common) 3) How do I define the slotdefs? The pins for v+ and v- are drawn on the circuit, not just defined as attributes. Can I repeat the pin numbers unpunished? 4) If I do the above, I get gnetlist -g drc2 complaining that the second op-amp isn't in the circuit. 5) If, after giving up, I put it in the circuit, and connect its pins, so it won't complain again, I get "Invalid wanted_pin passed to get-nets [unknown]" (5 times) 6) If I try to define a slot=1 for this component, gschem crashes. 7) And, to top things off, I can't seem to get this running with ngspice - I get a report of 'singular matrix'es and non-convergence. Would someone please have a look at the sym and circuit? As everything is small, I've attached all files (including the model). Thanks. John
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evm_input.sch
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mc33078-1.sym
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MC33078.mod
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